Home / 21,216.60-31,824.84-5,634.24

Finding the Fourth Proportional to 21,216.60, 31,824.84 and 5,634.24

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Solution

The fourth proportional to 21,216.60, 31,824.84 and 5,634.24 is: 8,451.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,216.60 : 31,824.84 = 5,634.24 : x
  2. Step 2: Convert to fraction form
    21,216.60/31,824.84 = 5,634.24/x
  3. Step 3: Cross multiply
    21,216.60x = 31,824.84 × 5,634.24
  4. Step 4: Simplify right side
    21,216.60x = 179,308,786.52
  5. Step 5: Solve for x
    x = 179,308,786.52/21,216.60
  6. Step 6: Final answer
    x = 8,451.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.